Could you please inform us the difference between this client that has the issue among others, since it only happen on one of your client in production?

Look forward for your response.

the diffrence is that the web site is published(the code is compiled to dlls)

Sorry if my previous post is ambiguous.

You said, on your first post, that the error only happens at one of your client. So, I assume that the error doesn’t happen on other clients.

Let’s say that the error happen on client X, but not happen on client Y and client Z. Could you please inform us the differences between client X and the other client, client Y and client Z.

The differences like, the operating system, the browser type, the browser version, etc.

Hope this helps. Look forward for your response.